Speed Control of 3-phase Induction Motors under Fault Conditions Supplied by Wind Turbine Using Indirect Vector Control

2017 ◽  
Vol 8 (1) ◽  
pp. 222
Author(s):  
Mohammad Jannati ◽  
Solieman Eskandari ◽  
Tole Sutikno
Keyword(s):  
Wind Turbine ◽  
Vector Control ◽  
Pulse Width Modulation ◽  
Induction Motors ◽  
Dynamic Performance ◽  
Speed Control ◽  
Open Circuit ◽  
Performance Validity ◽  
Speed Sensor ◽  
Torque Pulsations

This article studies speed control of 3-phase Induction Motors (IMs) under fault conditions supplied by wind turbine using Indirect Vector Control (IVC). The wind turbine plays as a prime mover to a connected DC generator. Pulse Width Modulation (PWM) is used to obtain 3-phase AC voltage from the DC generator output. The proposed modified controller is able to control a star-connected 3-phase IM under normal, stator winding open-circuit fault and speed-sensor fault conditions. Simulation results are presented and shown the performance, validity and possibility of the proposed technique. The results demonstrate that, the proposed scheme provides good dynamic performance especially in reduction of IM speed and torque pulsations.

Speed Sensor-Less Indirect Vector Control System Based on a Novel Sliding Mode Control Speed Observer

2011 ◽  
Vol 383-390 ◽  
pp. 196-201 ◽  
Author(s):  
Guo Hua Li ◽  
Ji Qiang Wang
Keyword(s):  
Control System ◽  
Sliding Mode Control ◽  
Vector Control ◽  
Induction Motors ◽  
Sliding Mode ◽  
Fast Response ◽  
Stator Current ◽  
Mode Control ◽  
Speed Sensor ◽  
Vector Control System

Vector control is one of the most popular control techniques of induction motors. Owing to its simplicity, the indirect vector control gains increasing popularity. This paper proposes a speed sensor-less indirect vector control system of induction motors based on a novel sliding mode control (SMC) speed observer. The observer uses the stator current difference of the estimated value and the actual value to calculate the rotor speed. The simulation results show that the method has a fast response and high accuracy, and it robust to parameter variations.

scholarly journals SENSORLESS SPEED CONTROL OF THE DIRECT CURRENT MOTORS

2021 ◽  
Vol 2021 (58) ◽  
pp. 23-29
Author(s):  
S. Peresada ◽  
◽  
Y. Nikonenko ◽  
V. Pyzhov ◽  
D. Rodkin ◽  
...  
Keyword(s):  
Control Algorithm ◽  
Dynamic Performance ◽  
Speed Control ◽  
Angular Speed ◽  
Observer Design ◽  
Loop Current ◽  
Speed Sensor ◽  
Speed Regulation ◽  
Speed Measurement ◽  
Measurement Design

In this paper, a new speed control algorithm for a permanent magnet DC motor which does not require implementation of the angular speed sensor is presented. Three steps are performed to develop the control system: design of speed tracking control algorithm assuming the speed measurement; design of speed observer; design of sensorless speed control algorithm based on the principle of separation. Information about speed is taken from the speed observer using the motor current value. The stability of the composite system dynamics consisting of three subsystems (the speed regulation loop, current regulation loop, and speed observer) is analyzed. The feedback gains tuning procedure for decoupling of three subsystems is given. The simulation results show that the dynamic performance of the designed system is similar to the performance of the system with angular speed measurement. The resulting closed-loop system has structural robustness properties with respect to parametric and coordinate disturbances. References 12, figures 2.

scholarly journals Analysis of Five Leg Voltage Source Inverter Fed Dual Motor Drive System

2021 ◽  
Vol 309 ◽  
pp. 01142
Author(s):  
S P Harish ◽  
S Sridhar ◽  
Omsekhar Indela ◽  
Kumaran G Kodeeswara ◽  
P. Parthiban
Keyword(s):  
Pulse Width Modulation ◽  
Induction Motors ◽  
Harmonic Distortion ◽  
Speed Control ◽  
Fault Analysis ◽  
Drive System ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Modulation Techniques ◽  
The Cost

With the advent of electric vehicle multi-machine drives are attaining overwhelming responses from the researchers and industries in recent years, as compared to their counterpart of single machine drive. In this regard, the industries are looking for multi motor control with single inverter system with precise speed control. The solution of aforesaid problem lies with multi-leg inverter fed dual induction motor drives that are capable for high power ratings and other specific applications. Any faults in the system leads to the failure of the operation of the entire drive system. Hence condition monitoring of the entire drive system becomes of paramount significance. Considering the aforementioned points, this paper focuses on the fault analysis of five leg voltage source inverter feeding dual induction motors. The drive system is simulated using MATLAB/ SIMULINK for different pulse width modulation techniques like SPWM, SVPWM and Two Arm Modulation (TAM) Techniques. The effect on fault in the inverter like opening of the switch and shorting the switch, on the performance of the induction motors are analysed. Total Harmonic Distortion (THD) of the stator current for different modulation techniques are compared for the analysis purpose. From the results it is observed that the THD is less for SVPWM techniques as compared with SPWM and TAM method. But independent control of both the machine cannot be attained by SPWM and SVPWM method. For independent speed control TAM method is used. So a trade-off has to be done considering the requirement and THD. It is finally concluded that independent speed control is achieved at the cost of higher THD.

Exact Linearization and Nonlinear Decoupling of Induction Motors for Speed Control and Vector Control

1995 ◽  
Vol 28 (16) ◽  
pp. 67-71
Author(s):  
M. Kawata ◽  
K. Morita ◽  
K. Oba ◽  
K. Kamei ◽  
K. Inoue
Keyword(s):  
Vector Control ◽  
Induction Motors ◽  
Speed Control ◽  
Exact Linearization

scholarly journals Aerodynamic characteristics of a stationary five bladed vertical axis vane wind turbine

1970 ◽  
Vol 39 (2) ◽  
pp. 95-99 ◽  
Author(s):  
Faizul Mohammad Kamal ◽  
Md Quamrul Islam
Keyword(s):  
Wind Turbine ◽  
Dynamic Performance ◽  
Research Work ◽  
Vertical Axis ◽  
Aerodynamic Characteristics ◽  
Open Circuit ◽  
Power Coefficient ◽  
Vertical Axis Wind Turbine ◽  
Torque Coefficient ◽  
Static Torque

Drag and torque coefficients of a stationary five bladed vane type rotor have been investigated in this present research work by measuring the pressure distribution on the blade surfaces at various rotor angles. The experimental investigation has been performed at Reynolds number 1.65 x 105 in a uniform flow jet produced by an open circuit wind tunnel. It has been observed that the total static torque coefficient increases from 0° to 10°, and reaches its maximum value and then decreases up to 30°. From this point, the total static torque increases up to 72°. Total static torque coefficient at different rotor angles curve repeats from 72° to 144°, 144° to 216°, 216° to 288°, and 288° to 360° angle of rotation. A quasi-steady approach has been applied for the prediction of dynamic performance of the rotor using the static drag and torque coefficients. This method results in a fair agreement with the measured power coefficient. Keywords: Vertical axis wind turbine, vane type rotor, drag coefficient, torque coefficient. doi:10.3329/jme.v39i2.1852 Journal of Mechanical Engineering, Vol. ME39, No. 2, Dec. 2008 95-99

scholarly journals Induction motor speed control in closed loop system with thyristor voltage regulator

2021 ◽  
pp. 64-69
Author(s):  
I. G. Odnokopylov ◽  
◽  
D. Yu. Lyapunov ◽  
N. A. Voronina ◽  
A. D. Umurzakova ◽  
...  
Keyword(s):  
Simulation Model ◽  
Induction Motor ◽  
Closed Loop ◽  
Induction Motors ◽  
Speed Control ◽  
Voltage Regulator ◽  
Motor Speed ◽  
Closed Loop System ◽  
Starting Current ◽  
Speed Sensor

There exists a huge class of actuating mechanisms based on induction motors, where the use of a thyristor voltage regulator is relevant. This paper presents studies on the introduction of the ability not only to reduce the starting current of the motor, but also to regulate the speed of rotation. Studies have been conducted on the possibility of obtaining a regulation range of 1:5 using simulation model. The influence of the resolution of the speed sensor on the accuracy of regulation is investigated. Recommendations on the implementation of the developed method of speed control are given

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